Improvement in machines for rolling file-blanks



SPOFFORD & SUUTHWICK.

File Blank Rolling Machine. No. 38,454. r Patent ed May 5. 1863.

UNITED STATES PATENT Orricn.

CHARLES SPOFFORD AND A. B. SOUTHWIOK, OF BALLARDVALE, MASS, ASSIGNORS TO THE WHIPPLE FILE MANUFACTURING COMPANY.

IMPROVEMENT IN MACHINES FOR ROLLING FiLE-BLANKS.

Specification forming'part of Letters Patent No. 38,454, dated May 5, 1863.

To aZZ whom it may concern:

Be it known that we, CHARLES SPOFFORD and A. B. SOUTHWIGK, of Ballardvale, in the county of Essex and State of Massachusetts, have invented an Improved Machine for Rolling File-Blanks, of which the following is a full, clear, andexactdescription, reference being had to the accompanying drawings, making part of this specification, in which Figure 1 is a perspective view of our improved machine Fig. 2, a vertical section through the shaft 70 and the parts within the same vertical plane; Fig. 3,a section through the upper roll, E; Fig. 4, a view of the re movable pattern or die cl.

To enable others skilled in the art to understand and use our invention, we will proceed to describe the manner in which we have carried it out.

From the bed A of the machine rise the standards 0, upon the top of which are secured by bolts and nuts the cross-pieces 1).

E and F are two rolls, the journals of which run in boxes at, that slide up and down in the standards 0.

When the machine is in operation, the boxes to are held immovably by the screws 19, which pass through the cross-pieces D and bear upon the blocks 0 on the top of the boxes of the upper roll; but when it becomes necessary to take out the rolls E and F the cross-pieces D can be removed and the boxes awithdrawn, as required.

G is the driving-shaft, which carries the driving-pulley H, and also a pinion, I, that engages with the cog-wheel K on the shaft of the lower roll, F. The upper roll, E, is driven with a corresponding surface velocity, being connected with the lower roll by gears. (Not shown in the drawings.) The upper roll, E, carries the die d, in which is cut a groove, 6, which corresponds in form with the finished file-blank, being narrower at one end than the other, as seen in Fig. 4.. This die is held in place by collars f and g, the inclined edges of which are adapted to and fit over the edges of the die, as seen in section in Fig. 3. The collar g is pressed up so as to hold the die between it and the collar f by the screw-nut L on the end of the roll, the pin 13 preventing the die from turning on the roll when the machine is in operation. If dies of different widths be employed, the width of the collarsf andg must correspond thereto, that the die may be kept in the center of the roll. The lower roll, F, is constructed in the ordinarymanner with a plain surface. The file-blank is fed forward to insure its entering between the rolls at the proper moment, in the following manner:

M is a cog-wheel on the lower roll, F, which engages with the cog-wheel N on the short shaft it, which runs in the bearing Z.

m is a. collar, secured to the shaft 70 by a spline and feather. This collar carries a tooth, n, which may be clutched with a tooth, 0, on the hub of a cog-wheel, O, that runs loosely on the shaft k, Fig. 2, and engages with the rack-bar S on the carriage P, to which the blank'holder Q is secured. The collar m is moved forward, so that its tooth a may engage with the tooth 0 upon the wheel 0, in the following manner: 19 is a bar, which slides in a mortise in the frame-work, one end, q, of which is bent up and plays in a groove, 1', in the collar m. 0n the under side of the bar 19 is a bent pin, 8, against which strikes the end of the foot-lever t, which is pivoted to the framework, and thus as the operator presses his foot on this lever the collar on is thrown forward, so as to drive the wheel 0 whenever its tooth or shall come round into position to engage with the tooth o, by which the carriage P is moved forward to present the blank to the rolls, as required.

In order that the blank may be introduced into the die at the proper point of its revolution, it is necessary that the tooth n be capable of adjustment with respect to the tooth 0. This may be effected by changing the position of the wheel N upon its shaft by means of the set screw 0. It will thus be perceived that the collar m may be shifted at any time by the operator, but that the carriage will not start to'move until the proper time arrives to present the blank accurately to the die. The lever t is retracted by the spring y, and when the carriage P has nearly reached the end of its traverse the inclined wedge a, Fig. 1, upon the carriage strikes the pin 1:, Fig. 2, upon the bar 19, and moves the collar in back int-o the po sition seen in Fig. 2, thus unclutching it from the wheel 0 and stopping the carriage, which is then run back again by the weight R on the end of the cord u, which runs over a pulley,

through the rolls the blank enters a covered trough placed immediately behind the rolls,

(butnot shown in the drawings,) by which it is kept straight and prevented from curling.

The file-holder Q may be raised or lowered by means of screws or slots, as seeniu Fig. 2.

The die 01 may be changed to adapt the machine to the rolling of blanks of different forms.

What we claim as our invention, and desire to secure by Letters Patent, is-- The rolls E and F, in combination with the carriage P, arranged and operating in the manner described, for the purpose set forth.

CHARLES SPOFFORD. A. B. SOUTHWIOK. Witnesses P. E. TEsoHnMAonEn, N. W. STEARNs. 

